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Finding the Fourth Proportional to 202,885.40, 304,328.10 and 139,899.80

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Solution

The fourth proportional to 202,885.40, 304,328.10 and 139,899.80 is: 209,849.70

Step by Step Solution

  1. Step 1: Write the proportion equation
    202,885.40 : 304,328.10 = 139,899.80 : x
  2. Step 2: Convert to fraction form
    202,885.40/304,328.10 = 139,899.80/x
  3. Step 3: Cross multiply
    202,885.40x = 304,328.10 × 139,899.80
  4. Step 4: Simplify right side
    202,885.40x = 42,575,440,324.38
  5. Step 5: Solve for x
    x = 42,575,440,324.38/202,885.40
  6. Step 6: Final answer
    x = 209,849.70

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1.5x scale

Why These Related Problems?

These problems maintain the same ratio (1.50) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.